T-Mobile is a great cell phone carrier, but currently they do not have a plan to accommodate 100% of your needs.

You should look into a service that has more of an international appeal, onesimcard may be a service you should take a look at. Verizon, AT&T and Sprint will not be able to help you with your endeavors either.

Just a thought, I'm very curious... How much would you be willing to pay for this hypothetical plan covering all 7 of your needs?

snn555 answer should be marked as the correct answer. No further explanation is needed concerning which T-Mobile Plan is suitable for you.

But, If you did have someone in the United States purchase a T-Mobile Plan for you, the service would get terminated the moment your calling habits went beyond T-Mobile's expressed guidelines.

The T-Mobile service is not for extended international use; you must reside in the U.S. and primary usage must occur on our U.S. network. Device must register on our U.S. network before international use. Service may be terminated or restricted for excessive roaming or misuse.

Your texting and data would be free (included in your plan) but calls using the T-mobile One Plan or Simple Choice North American Plan from Taiwan would cost .20 cents per minute based on T-Mobile's International Rate Plan. All other T-Mobile plans cost $2.39 per minute from Taiwan.